Lyman Brass Smith Bushing for Case Trim Xpress #22 7mm Rem SAUM .300 Rem SAUM

The Lyman Brass Smith Bushing for Case Trim Xpress #22 is a precision reloading accessory engineered for centerfire rifle cartridges, specifically designed to handle 7mm Rem SAUM and .300 Rem SAUM bottleneck cases. This bushing attaches to the Case Trim Xpress trimmer system and serves as the critical support and centering mechanism that positions cases perpendicular to the cutting blade. The spring-loaded design eliminates binding and delivers a smooth, consistent trim stroke—enabling users to process approximately 15 cases per minute without fatigue or operator-induced variation.

Bushing-based case trimming systems do not require separate pilots; instead, the bushing bore itself guides and centers the case shoulder, reducing setup complexity and the risk of pilot-related concentricity errors. This design philosophy is especially valuable for magnum cartridges like the 7mm Rem SAUM and .300 Rem SAUM, where case neck consistency directly impacts chamber fit and powder charge symmetry. The compact dimensions (1.6 × 0.8 × 3.4 inches) and minimal weight make storage and exchange between bushing sets straightforward during multi-cartridge reloading sessions.

Precision rifle reloaders—whether preparing ammunition for long-range target work, hunting, or competition—depend on uniform case neck length to maintain pressure curves and bullet seating depth consistency. The Lyman bushing system addresses this requirement by offering caliber-specific bushings that fit most popular bottleneck rifle cartridges. The #22 bushing is rated for the SAUM (Short Ultra Magnum) family, making it essential for anyone maintaining a dedicated SAUM reloading setup and seeking repeatability across large case batches.